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Preparation of large single grains of the quasicrystalline icosahedral Al–Cu–Fe ψ phase

Published online by Cambridge University Press:  31 January 2011

T.A. Lograsso  and
D.W. Delaney
T.A. Lograsso
Affiliation:
Metallurgy and Ceramics Program, Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011
D.W. Delaney
Affiliation:
Metallurgy and Ceramics Program, Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011
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Abstract

A cyclic heat-treatment process was used to prepare single grains of the quasicrystalline icosahedral phase, ψ–Al65Cu23Fe12. Alloys of appropriate composition are melted and chill cast into copper molds. Multiple cyclic heat treatments at successively higher temperatures below 860 °C, the peritectic decomposition temperature of the quasicrystal phase, are used to enhance the growth of the ψ phase. Single grains up to 10 mm × 5 mm × 5 mm have been prepared.

Type
Articles
Information
Journal of Materials Research , Volume 11 , Issue 9 , September 1996 , pp. 2125 - 2127
Copyright
Copyright © Materials Research Society 1996

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References

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